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root/cvsroot/UserCode/MitAna/DataUtil/src/TreeWriter.cc

Comparing UserCode/MitAna/DataUtil/src/TreeWriter.cc (file contents):
Revision 1.1 by loizides, Tue May 27 19:36:05 2008 UTC vs.
Revision 1.15 by loizides, Thu Mar 12 18:26:08 2009 UTC

#	Line 1 | Line 1
1		// $Id$
2
3		#include "MitAna/DataUtil/interface/TreeWriter.h"
4	–
4		#include <Riostream.h>
5		#include <TObject.h>
6		#include <TSystem.h>
7		#include <TProcessID.h>
8	+	#include <TBranchRef.h>
9	+	#include "MitAna/DataUtil/interface/Debug.h"
10
11		using namespace mithep;
12
13		ClassImp(mithep::TreeWriter)
14
15		//__________________________________________________________________________________________________
16	<	TreeWriter::TreeWriter(const char *tname, Bool_t doreset)
17	<	: TNamed(tname,Form("%s written by mithep::TreeWriter", tname)),
18	<	fBaseURL("."),
19	<	fPrefix("mithep"),
20	<	fFileNumber(0),
21	<	fCompressLevel(9),
22	<	fDefBrSize(64*1024),
23	<	fDefSL(99),
24	<	fMaxSize((Long64_t)(0.99 * TTree::GetMaxTreeSize())),
25	<	fkMinFreeSpace(1024*1024),
26	<	fkMinAvgSize(10*1024),
27	<	fEvtObjNum(-1),
28	<	fIsInit(kFALSE),
29	<	fDoObjNumReset(doreset),
30	<	fFile(0),
31	<	fTree(0)
16	>	TreeWriter::TreeWriter(const char *tname, Bool_t doreset) :
17	>	TNamed(tname,Form("%s written by mithep::TreeWriter", tname)),
18	>	fBaseURL("."),
19	>	fPrefix("mithep"),
20	>	fFileNumber(0),
21	>	fCompressLevel(9),
22	>	fDefBrSize(64*1024),
23	>	fDefSL(99),
24	>	fMaxSize((Long64_t)(0.99 * TTree::GetMaxTreeSize())),
25	>	fkMinFreeSpace(1024*1024),
26	>	fkMinAvgSize(10*1024),
27	>	fEvtObjNum(-1),
28	>	fIsInit(kFALSE),
29	>	fDoObjNumReset(doreset),
30	>	fDoBranchRef(0),
31	>	fFile(0),
32	>	fTrees(0)
33		{
34		// Constructor.
35
36	<	TDirectory::TContext context(0);
35	<	fTree = new TTree(GetName(), GetTitle());
36	<	fTree->SetDirectory(0);
36	>	fTrees.SetOwner();
37		}
38
39		//__________________________________________________________________________________________________
#	Line 41 | Line 41 | TreeWriter::~TreeWriter()
41		{
42		// Destructor.
43
44	<	if(fIsInit) {
45	<	CloseFile();
46	<	}
47	<
48	<	TDirectory::TContext context(0);
49	<	delete fTree;
44	>	Terminate();
45		}
46
47		//__________________________________________________________________________________________________
48	<	void TreeWriter::AddBranch(const char *name, const char *cname, void *obj, Int_t bsize, Int_t level)
48	>	void TreeWriter::AddBranch(const char *name, const char *cname,
49	>	void *obj, Int_t bsize, Int_t level)
50		{
51	<	// Add branch with name "name" into tree and set its address to object pointer
52	<	// for class name "cname" using a given buffer size and splitlevel.
51	>	// Add branch with name "name" into tree with name "tname" and set its address
52	>	// to object pointer for class name "cname" using a given buffer size and splitlevel.
53
54	<	fTree->Bronch(name, cname, obj, bsize, level);
54	>	MyTree  *t = AddOrGetMyTree(GetName());
55	>	TBranch *b = t->Bronch(name, cname, obj, bsize, level);
56	>	b->SetCompressionLevel(GetCompressLevel());
57		}
58
59	<	//__________________________________________________________________________________________________
60	<	void TreeWriter::AddBranch(const char *name, const char *cname, void *obj, Int_t bsize)
59	>	//--------------------------------------------------------------------------------------------------
60	>	void TreeWriter::AddBranch(const char *name, void *obj, Int_t bsize, Int_t level)
61		{
62	<	// Add branch with name "name" into tree and set its address to object pointer
63	<	// for class name "cname" using a given buffer size and default splitlevel.
62	>	// Add branch with name "name" into tree with name "tname" and set its address
63	>	// to object pointer using a given buffer size and splitlevel.
64
65	<	fTree->Bronch(name, cname, obj, bsize, fDefSL);
65	>	AddBranch(name, CName(obj), obj, bsize, level);
66		}
67
68	<	//__________________________________________________________________________________________________
69	<	void TreeWriter::AddBranch(const char *name, const char *cname, void *obj)
68	>	//--------------------------------------------------------------------------------------------------
69	>	void TreeWriter::AddBranch(const char *name, const char *cname,
70	>	void *obj, Int_t bsize)
71		{
72	<	// Add branch with name "name" into tree and set its address to object pointer
73	<	// for class name "cname" using a given buffer size and default splitlevel.
72	>	// Add branch with name "name" into tree with name "tname" and set its address
73	>	// to object pointer for class name "cname" using a given buffer size and default splitlevel.
74
75	<	fTree->Bronch(name, cname, obj, fDefBrSize, fDefSL);
75	>	MyTree  *t = AddOrGetMyTree(GetName());
76	>	TBranch *b = t->Bronch(name, cname, obj, bsize, fDefSL);
77	>	b->SetCompressionLevel(GetCompressLevel());
78		}
79
80	<	//__________________________________________________________________________________________________
80	>	//--------------------------------------------------------------------------------------------------
81	>	void TreeWriter::AddBranch(const char *name, void *obj, Int_t bsize)
82	>	{
83	>	// Add branch with name "name" into tree with name "tname" and set its address
84	>	// to object pointer using a given buffer size and default splitlevel.
85	>
86	>	AddBranch(name, CName(obj), obj, bsize);
87	>	}
88	>
89	>	//--------------------------------------------------------------------------------------------------
90	>	void TreeWriter::AddBranch(const char *name, const char *cname,
91	>	void *obj)
92	>	{
93	>	// Add branch with name "name" into tree with name "tname" and set its address
94	>	// to object pointer for class name "cname" using a default buffer size and splitlevel.
95	>
96	>	MyTree  *t = AddOrGetMyTree(GetName());
97	>	TBranch *b = t->Bronch(name, cname, obj, fDefBrSize, fDefSL);
98	>	b->SetCompressionLevel(GetCompressLevel());
99	>	}
100	>
101	>	//--------------------------------------------------------------------------------------------------
102	>	void TreeWriter::AddBranch(const char *name, void *obj)
103	>	{
104	>	// Add branch with name "name" into tree with name "tname" and set its address
105	>	// to object pointer using a default buffer size and splitlevel.
106	>
107	>	AddBranch(name, CName(obj), obj);
108	>	}
109	>
110	>	//--------------------------------------------------------------------------------------------------
111	>	void TreeWriter::AddBranchToTree(const char *tname, const char *name, const char *cname,
112	>	void *obj, Int_t bsize, Int_t level)
113	>	{
114	>	// Add branch with name "name" into tree with name "tname" and set its address
115	>	// to object pointer for class name "cname" using a given buffer size and splitlevel.
116	>
117	>	MyTree  *t = AddOrGetMyTree(tname);
118	>	TBranch *b = t->Bronch(name, cname, obj, bsize, level);
119	>	b->SetCompressionLevel(GetCompressLevel());
120	>	}
121	>
122	>	//--------------------------------------------------------------------------------------------------
123	>	void TreeWriter::AddBranchToTree(const char *tname, const char *name, void *obj,
124	>	Int_t bsize, Int_t level)
125	>	{
126	>	// Add branch with name "name" into tree with name "tname" and set its address
127	>	// to object pointer using a given buffer size and splitlevel.
128	>
129	>	AddBranchToTree(tname, name, CName(obj), obj, bsize, level);
130	>	}
131	>
132	>	//--------------------------------------------------------------------------------------------------
133	>	void TreeWriter::AddBranchToTree(const char *tname, const char *name, const char *cname,
134	>	void *obj, Int_t bsize)
135	>	{
136	>	// Add branch with name "name" into tree with name "tname" and set its address
137	>	// to object pointer for class name "cname" using a given buffer size and default splitlevel.
138	>
139	>	MyTree  *t = AddOrGetMyTree(tname);
140	>	TBranch *b = t->Bronch(name, cname, obj, bsize, fDefSL);
141	>	b->SetCompressionLevel(GetCompressLevel());
142	>	}
143	>
144	>	//--------------------------------------------------------------------------------------------------
145	>	void TreeWriter::AddBranchToTree(const char *tname, const char *name, void *obj,
146	>	Int_t bsize)
147	>	{
148	>	// Add branch with name "name" into tree with name "tname" and set its address
149	>	// to object pointer using a given buffer size and default splitlevel.
150	>
151	>	AddBranchToTree(tname, name, CName(obj), obj, bsize);
152	>	}
153	>
154	>	//--------------------------------------------------------------------------------------------------
155	>	void TreeWriter::AddBranchToTree(const char *tname, const char *name, const char *cname,
156	>	void *obj)
157	>	{
158	>	// Add branch with name "name" into tree with name "tname" and set its address
159	>	// to object pointer for class name "cname" using a default buffer size and splitlevel.
160	>
161	>	MyTree  *t = AddOrGetMyTree(tname);
162	>	TBranch *b = t->Bronch(name, cname, obj, fDefBrSize, fDefSL);
163	>	b->SetCompressionLevel(GetCompressLevel());
164	>	}
165	>
166	>	//--------------------------------------------------------------------------------------------------
167	>	void TreeWriter::AddBranchToTree(const char *tname, const char *name, void *obj)
168	>	{
169	>	// Add branch with name "name" into tree with name "tname" and set its address
170	>	// to object pointer for class name "cname" using a default buffer size and splitlevel.
171	>
172	>	AddBranchToTree(tname, name, CName(obj), obj);
173	>	}
174	>
175	>	//--------------------------------------------------------------------------------------------------
176	>	void TreeWriter::AddTree(const char *tname)
177	>	{
178	>	// Add tree with name "name" into tree with name "tname".
179	>
180	>	AddOrGetMyTree(tname);
181	>	}
182	>
183	>	//--------------------------------------------------------------------------------------------------
184	>	MyTree *TreeWriter::AddOrGetMyTree(const char *tn)
185	>	{
186	>	// Add new tree if not present in array of trees or return
187	>	// present tree.
188	>
189	>	MyTree *tree = GetMyTree(tn);
190	>	if (tree)
191	>	return tree;
192	>
193	>	TDirectory::TContext context(fFile);
194	>	tree = new MyTree(tn, tn);
195	>	tree->SetDirectory(fFile);
196	>	if (fDoBranchRef)
197	>	tree->BranchRef();
198	>	fTrees.AddLast(tree);
199	>	return tree;
200	>	}
201	>
202	>	//--------------------------------------------------------------------------------------------------
203		Bool_t TreeWriter::BeginEvent(Bool_t doreset)
204		{
205		// Prepare for the next event. If doreset or fDoObjNumReset is kTRUE
#	Line 86 | Line 209 | Bool_t TreeWriter::BeginEvent(Bool_t dor
209		OpenFile();
210		}
211
212	<	if(doreset || fDoObjNumReset) {
212	>	if (doreset || fDoObjNumReset) {
213		fEvtObjNum = TProcessID::GetObjectCount();
214		}
215
216		return kTRUE;
217		}
218
219	<	//__________________________________________________________________________________________________
219	>	//--------------------------------------------------------------------------------------------------
220		void TreeWriter::CloseFile()
221		{
222	<	// Write tree and close file.
222	>	// Write tree(s) and close file.
223
224		if (!fIsInit) {
225		Fatal("CloseFile", "File was not opened, call OpenFile() first!");
#	Line 106 | Line 229 | void TreeWriter::CloseFile()
229		TDirectory::TContext context(fFile); // cd fFile &&
230		// automatically restore gDirectory
231
232	<	fTree->Write(fTree->GetName(),TObject::kOverwrite);
233	<	fTree->Reset();
234	<	fTree->SetDirectory(0);
232	>	for (Int_t i=0;i<fTrees.GetEntries();++i) {
233	>	MyTree *mt = static_cast<MyTree*>(fTrees.At(i));
234	>	mt->Write(mt->GetName(),TObject::kOverwrite);
235	>
236	>	// backup and restore list of branch pointers from TRefTable (needed for autoloading)
237	>	if (mt->GetBranchRef()) {
238	>	TObjArray *parents = mt->GetBranchRef()->GetRefTable()->GetParents();
239	>	TObjArray parentsBak(*parents);
240	>	mt->Reset();
241	>	for (Int_t j=0; j<parentsBak.GetEntries(); ++j)
242	>	parents->Add(parentsBak.At(j));
243	>	}
244	>	else
245	>	mt->Reset();
246	>	mt->SetDirectory(0);
247	>	}
248
249		fFile->Close();
250		delete fFile;
#	Line 118 | Line 254 | void TreeWriter::CloseFile()
254		fFileNumber++;
255		}
256
257	<	//__________________________________________________________________________________________________
257	>	//--------------------------------------------------------------------------------------------------
258	>	const char *TreeWriter::CName(void *obj) const
259	>	{
260	>	// Dereference void* pointer into TObject* pointer
261	>
262	>	TObject **sobj = static_cast<TObject**>(obj);
263	>	TObject *tobj = dynamic_cast<TObject*>(*sobj);
264	>	if (tobj==0) {
265	>	Fatal("CName", "Given void* ptr can not be dereferenced into TObject*");
266	>	}
267	>	return tobj->ClassName();
268	>	}
269	>
270	>	//--------------------------------------------------------------------------------------------------
271	>	void TreeWriter::DoBranchRef(const char *tn)
272	>	{
273	>	// Fill BranchRef for given tree.
274	>
275	>	if (fTrees.GetEntries()==0) {
276	>	Error("DoBranchRef", "Tree with name %s not found!", tn);
277	>	return;
278	>	}
279	>
280	>	MyTree *mt = GetMyTree(tn);
281	>	if (!mt)
282	>	return;
283	>
284	>	mt->BranchRef();
285	>	}
286	>
287	>	//--------------------------------------------------------------------------------------------------
288		Bool_t TreeWriter::EndEvent(Bool_t doreset)
289		{
290		// Store the event in the tree. If doreset or fDoObjNumReset is kTRUE
#	Line 130 | Line 296 | Bool_t TreeWriter::EndEvent(Bool_t dores
296		return kFALSE;
297		}
298
299	<	//TDirectory::TContext context(fFile);
300	<	Int_t r = fTree->Fill();
299	>	Int_t r = 0;
300	>	for (Int_t i=0;i<fTrees.GetEntries();++i) {
301	>	MyTree *mt = static_cast<MyTree*>(fTrees.At(i));
302	>	if (mt->GetAutoFill()==0)
303	>	continue;
304	>	r += mt->Fill();
305	>	}
306
307	<	if(IsFull())
307	>	if (IsFull())
308		CloseFile();
309
310		if (doreset || fDoObjNumReset) {
311		if (fEvtObjNum<0) {
312		Error("EndEvent", "Object counter is zero. Did you call BeginEvent(kTRUE)?");
313		} else {
314	<	// Reset the TRef table. keep it from growing with each event (see doc)
314	>	// Reset the TRef table. Keep it from growing with each event (see doc)
315		TProcessID::SetObjectCount(fEvtObjNum);
316		}
317		}
#	Line 148 | Line 319 | Bool_t TreeWriter::EndEvent(Bool_t dores
319		return (r >= 0);
320		}
321
322	<	//__________________________________________________________________________________________________
322	>	//--------------------------------------------------------------------------------------------------
323	>	Long64_t TreeWriter::GetEntries(const char *tn) const
324	>	{
325	>	// Return entries of tree with given name. If no tree is given, return sum of entries
326	>	// of all trees.
327	>
328	>	if (fTrees.GetEntries()==0) return -1;
329	>
330	>	if (tn) {
331	>	const TTree *mt=GetTree(tn);
332	>	if (mt)
333	>	return mt->GetEntries();
334	>	else
335	>	return -1;
336	>	}
337	>
338	>	Long64_t ret = 0;
339	>	for (Int_t i=0;i<fTrees.GetEntries();++i) {
340	>	const MyTree *mt = static_cast<const MyTree*>(fTrees.At(i));
341	>	ret += mt->GetEntries();
342	>	}
343	>	return ret;
344	>	}
345	>
346	>	//--------------------------------------------------------------------------------------------------
347	>	MyTree *mithep::TreeWriter::GetMyTree(const char *tn)
348	>	{
349	>	// Return MyTree with given name from array.
350	>
351	>	if (fTrees.GetEntries()==0)
352	>	return 0;
353	>
354	>	TObject *obj = 0;
355	>	if (tn==0) {
356	>	obj = fTrees.At(0);
357	>	} else {
358	>	obj = fTrees.FindObject(tn);
359	>	}
360	>
361	>	if (obj)
362	>	return static_cast<MyTree*>(obj);
363	>	return 0;
364	>	}
365	>
366	>	//--------------------------------------------------------------------------------------------------
367	>	const TTree *mithep::TreeWriter::GetTree(const char *tn) const
368	>	{
369	>	// Return TTree with given name from array.
370	>
371	>	if (fTrees.GetEntries()==0)
372	>	return 0;
373	>
374	>	TObject *obj = 0;
375	>	if (tn==0) {
376	>	obj = fTrees.At(0);
377	>	} else {
378	>	obj = fTrees.FindObject(tn);
379	>	}
380	>
381	>	if (obj)
382	>	return dynamic_cast<const TTree*>(obj);
383	>	return 0;
384	>	}
385	>
386	>	//--------------------------------------------------------------------------------------------------
387	>	TTree *mithep::TreeWriter::GetTree(const char *tn)
388	>	{
389	>	// Return TTree with given name from array.
390	>
391	>	if (fTrees.GetEntries()==0)
392	>	return 0;
393	>
394	>	TObject *obj = 0;
395	>	if (tn==0) {
396	>	obj = fTrees.At(0);
397	>	} else {
398	>	obj = fTrees.FindObject(tn);
399	>	}
400	>
401	>	if (obj)
402	>	return dynamic_cast<TTree*>(obj);
403	>	return 0;
404	>	}
405	>
406	>	//--------------------------------------------------------------------------------------------------
407		Bool_t TreeWriter::IsFull() const
408		{
409		// Check if the maximum file size has been reached.
410
411		Long64_t entries = GetEntries();
157	–
412		if (entries < 1) return kFALSE;
413
414		Long64_t avgSize = GetFileSize() / entries;
#	Line 165 | Line 419 | Bool_t TreeWriter::IsFull() const
419		return (GetFileSize() + avgSize + fkMinFreeSpace) > fMaxSize;
420		}
421
422	<	//__________________________________________________________________________________________________
422	>	//--------------------------------------------------------------------------------------------------
423		void TreeWriter::OpenFile()
424		{
425		// Open the file and attach the tree.
#	Line 187 | Line 441 | void TreeWriter::OpenFile()
441		}
442
443		fFile->SetCompressionLevel(fCompressLevel);
444	<	fTree->SetDirectory(fFile);
444	>
445	>	for (Int_t i=0;i<fTrees.GetEntries();++i) {
446	>	MyTree *mt = static_cast<MyTree*>(fTrees.At(i));
447	>	mt->SetDirectory(fFile);
448	>	}
449	>
450		fIsInit = kTRUE;
451		}
452
453	<	//__________________________________________________________________________________________________
453	>	//--------------------------------------------------------------------------------------------------
454		void TreeWriter::Print(Option_t *option) const
455		{
456		// Print the contents of the tree writer.
457
458	<	if(option) {
458	>	if (option) {
459		cout << ClassName() << " with members " << endl;
460		cout << "   fBaseURL:       " << fBaseURL << endl;
461		cout << "   fPreFix:        " << fPrefix << endl;
#	Line 213 | Line 472 | void TreeWriter::Print(Option_t *option)
472		<< (GetEntries() == 1 ? " event" : " events") << endl;
473		}
474
475	<	//__________________________________________________________________________________________________
475	>	//--------------------------------------------------------------------------------------------------
476	>	void TreeWriter::SetAutoFill(const char *tn, Bool_t b)
477	>	{
478	>	// Set auto-fill mode of tree with given name.
479	>
480	>	if (fTrees.GetEntries()==0)
481	>	return;
482	>
483	>	MyTree *mt = GetMyTree(tn);
484	>	if (!mt)
485	>	return;
486	>
487	>	mt->SetAutoFill(b);
488	>	}
489	>
490	>	//--------------------------------------------------------------------------------------------------
491	>	void TreeWriter::SetMaxSize(Long64_t s)
492	>	{
493	>	// Set maximum file size. Check if this exceeds the ROOT file size and if,
494	>	// print a warning and adjust it.
495	>
496	>	if (s>=(Long64_t)(0.99 * TTree::GetMaxTreeSize())) {
497	>	Long64_t news = (Long64_t)(s/0.99);
498	>	Warning("SetMaxSize", "Maximum tree size increased from %lld to %lld",
499	>	TTree::GetMaxTreeSize(), news);
500	>	TTree::SetMaxTreeSize(news);
501	>	}
502	>
503	>	fMaxSize=s;
504	>	}
505	>
506	>	//--------------------------------------------------------------------------------------------------
507		void TreeWriter::StoreObject(const TObject *obj)
508		{
509		// Store object next to tree in file. Used to store the
#	Line 231 | Line 521 | void TreeWriter::StoreObject(const TObje
521
522		fFile->WriteTObject(obj,obj->GetName(),"WriteDelete");
523		}
524	+
525	+	//__________________________________________________________________________________________________
526	+	void TreeWriter::Terminate()
527	+	{
528	+	// Terminate tree file writing.
529	+
530	+	if (fIsInit) {
531	+	CloseFile();
532	+	}
533	+
534	+	TDirectory::TContext context(0);
535	+	fTrees.Clear();
536	+	}

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